Fig. S1. Limb reconstruction on uniform clock phylogeny

Fig. S1. Ancestral state reconstructions from MultiState in BayesTraits showing the probability of fully-developed hind limbs (blue), reduced limbs (yellow), and completely lost limbs (red) for each node as well as the states coded for terminal taxa on the uniform clock phylogeny. As in Fig. 4, white areas of pies at internal nodes indicate the posterior probability that a node does not exist.